/**
 * Client Portal Authentication Pages (Login & Register)
 * Modern design with green theme (#10b981)
 */

/* ========================================================================
   GOOGLE FONTS & MATERIAL ICONS
   ======================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200');

/* ========================================================================
   CSS VARIABLES
   ======================================================================== */
:root {
  /* Green Theme Colors */
  --color-primary: #10b981;
  --color-primary-dark: #059669;
  --color-primary-light: #34d399;
  --color-primary-lighter: #d1fae5;

  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-400: #BDBDBD;
  --color-gray-500: #9E9E9E;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  --color-gray-800: #424242;
  --color-gray-900: #212121;

  /* Semantic Colors */
  --color-error: #EF4444;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ========================================================================
   GLOBAL RESET
   ======================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-900);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-primary-light) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  animation: gradientShift 15s ease infinite;
  background-size: 200% 200%;
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* ========================================================================
   MATERIAL ICONS
   ======================================================================== */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
}

/* ========================================================================
   CONTAINER & CARD
   ======================================================================== */
.container {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 3rem 2.5rem;
  width: 100%;
  max-width: 440px;
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================================================
   LOGO & HEADER
   ======================================================================== */
.logo {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.logo .material-symbols-outlined {
  font-size: 32px;
  color: var(--color-primary);
}

.container img {
  display: block;
  margin: 0 auto 2rem;
  height: 80px;
  width: auto;
}

.container h1 {
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: 2rem;
}

.auth-subtitle {
  text-align: center;
  color: var(--color-gray-600);
  font-size: 0.9375rem;
  margin-bottom: 2rem;
}

/* ========================================================================
   FORM ELEMENTS
   ======================================================================== */
form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-700);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.form-group label .material-symbols-outlined {
  font-size: 18px;
  color: var(--color-primary);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  padding-left: 3rem;
  font-size: 0.9375rem;
  font-family: 'Inter', sans-serif;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-gray-900);
  transition: all var(--transition-base);
}

.form-group select {
  padding-left: 3rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24'%3E%3Cpath fill='%2310b981' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 20px;
  cursor: pointer;
}

.form-group select option {
  padding: 0.75rem;
  color: var(--color-gray-900);
  background-color: var(--color-white);
  font-size: 0.9375rem;
}

.form-group select option:first-child {
  color: var(--color-gray-500);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group input::placeholder {
  color: var(--color-gray-400);
}

/* Input Icons */
.form-group::before {
  content: '';
  font-family: 'Material Symbols Outlined';
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-gray-500);
  pointer-events: none;
  transition: color var(--transition-base);
}

.form-group:has(input:focus)::before,
.form-group:has(select:focus)::before {
  color: var(--color-primary);
}

.form-group:has(input[name="username"])::before {
  content: 'person';
}

.form-group:has(input[name="email"])::before {
  content: 'email';
}

.form-group:has(input[type="password"])::before {
  content: 'lock';
}

.form-group:has(select[name="client_type"])::before {
  content: 'business';
}

/* ========================================================================
   BUTTONS
   ======================================================================== */
.continue-btn {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.continue-btn:hover {
  background: linear-gradient(135deg, var(--color-primary-dark), #047857);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.continue-btn:active {
  transform: translateY(0);
}

.continue-btn .material-symbols-outlined {
  font-size: 20px;
}

/* ========================================================================
   ERROR MESSAGES
   ======================================================================== */
.error-msg {
  background-color: #FEE2E2;
  color: var(--color-error);
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border-left: 4px solid var(--color-error);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  animation: shake 0.4s ease;
}

.error-msg::before {
  content: 'error';
  font-family: 'Material Symbols Outlined';
  font-size: 20px;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

/* ========================================================================
   FOOTER TEXT & LINKS
   ======================================================================== */
.container > p {
  text-align: center;
  color: var(--color-gray-600);
  font-size: 0.9375rem;
  margin-top: 1.5rem;
}

.container > p a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition-base);
}

.container > p a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Back to Home Link */
.back-home {
  text-align: center;
  margin-top: 1.5rem;
}

.back-home a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-gray-600);
  font-size: 0.875rem;
  text-decoration: none;
  transition: all var(--transition-base);
}

.back-home a:hover {
  color: var(--color-primary);
}

.back-home a .material-symbols-outlined {
  font-size: 18px;
}

/* ========================================================================
   DIVIDER
   ======================================================================== */
.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 1.5rem 0;
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--color-gray-300);
}

.divider::before {
  margin-right: 1rem;
}

.divider::after {
  margin-left: 1rem;
}

/* ========================================================================
   RESPONSIVE DESIGN
   ======================================================================== */
@media (max-width: 480px) {
  body {
    padding: 1rem 0.75rem;
  }

  .container {
    padding: 2rem 1.5rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  .container img {
    height: 60px;
  }

  .container h1 {
    font-size: 1.25rem;
  }

  .form-group input,
  .form-group select {
    padding: 0.75rem 0.875rem;
    padding-left: 2.75rem;
  }

  .continue-btn {
    padding: 0.875rem 1.25rem;
  }
}